Abstract: Molybdenyl phosphates (MoO2)(HPO4) (I) and (MoO2)2(P2O7) (II) are prepared and characterized by 31P NMR. H3PMo12O40 heteropolyacid (HPA) decomposes upon thermolysis by two routes: (i) to form MoO3 and I (at ∼ 400°C) and (ii) through the anhydride phase PMo12O38.5 to form MoO3 and II (at ∼ 500°C). The ratio between the reaction routes depends on the heat treatment of the HPA (which controls the extent of the preliminary loss of water of constitution). Phases I and II in the thermolysis products are highly disperse. For this reason, I survives in them up to 650-700°C, whereas when bulk, I transforms to II below 400°C. Mother liquors from the synthesis of I (with P : Mo ≥ 1 and [Mo] ≈ 1 mol/1 obtained by mixing H3PMo12O40 and H3PO4) contained molybdenyl phosphate complexes (95Mo NMR signals with δ = -66 and -103 ppm).

Cite: Maksimovskaya R.I. , Bondareva V.M. , Litvak G.S.
Phases Formed upon Thermolysis of H3PMo12O40 Heteropolyacid by 31P NMR
Russian Journal of Inorganic Chemistry. 1996. V.41. N7. P.1123-1129. Scopus РИНЦ

Original: Максимовская Р.И. , Бондарева В.М. , Литвак Г.С.
О составе фаз, образующихся при термолизе гетерополикислоты H3PMo12O40, по данным ЯМР 31Р
Журнал неорганической химии. 1996. Т.41. №7. С.1173-1180. WOS Scopus РИНЦ ANCAN

Dates:

Submitted:	Sep 15, 1995
Published print:	Jul 1, 1996

Identifiers:

Scopus:	2-s2.0-2742593628
Elibrary:	13236283

Citing: Пока нет цитирований